CN106531390A - Complex metal oxide soft magnetic material and preparation method thereof - Google Patents
Complex metal oxide soft magnetic material and preparation method thereof Download PDFInfo
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- CN106531390A CN106531390A CN201611181131.XA CN201611181131A CN106531390A CN 106531390 A CN106531390 A CN 106531390A CN 201611181131 A CN201611181131 A CN 201611181131A CN 106531390 A CN106531390 A CN 106531390A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
Abstract
The invention discloses a complex metal oxide soft magnetic material and a preparation method thereof, and belongs to the field of soft magnetic materials. The method comprises the following steps of mixing required materials at a high speed, sintering the materials under nitrogen protection, controlling a sintering temperature at 100-120 DEG C and the time at 200-300 minutes; crushing the materials at 100-120MPa; carrying out hot pressing; and sintering under nitrogen protection, controlling the sintering temperature at 750-800 DEG C, carrying out heat preservation for 80-100 minutes and carrying out furnace cooling to a room temperature. The magnetism of the complex metal oxide soft magnetic material at 300 DEG C is 1.200-1.213T, the coercivity is 827-831kA/m, the maximum magnetic energy product is 162-164kJ/m<3>, the overall performance of the soft magnetic material can be improved by adding glyceryl monostearate; and the magnetism and the maximum magnetic energy product of the soft magnetic material can be improved to a certain extent through hydroxy propyl cellulose.
Description
Technical field
The invention belongs to soft magnetic materials field, more particularly to a kind of metal composite oxide soft magnetic materials and its preparation side
Method.
Background technology
The definition of soft magnetic materials：Magnetic material with low-coercivity and high magnetic permeability.Soft magnetic materials is easy to magnetization, also easily
In demagnetization, it is widely used in electrical equipment and electronic equipment.Using most soft magnetic materials be ferro-silicium (silicon steel sheet) and
Various soft magnetic ferrites etc..Soft magnetic materials application in the industry started from for 19 end of the centurys.It is emerging with electric power work and telecom technology
Rise, begin to use low-carbon (LC) steel making motor and transformer, it is tiny used in the magnetic core of the inductance coil in telephone line
Iron powder, iron oxide, thin wire etc..To 20 beginnings of the century, have developed silicon steel sheet and replace mild steel, improve the efficiency of transformer,
Reduce loss.Silicon steel sheet still ranks first in power industry soft magnetic materials until now.To the twenties, radiotechnics
Rise, promote the development of high permeability material, occur in that permalloy and permalloy powder core etc..From the forties to 60 years
In generation, be period for developing rapidly of science and technology, radar, television broadcasting, invention of integrated circuit etc., the requirement to soft magnetic materials
It is higher, produce soft magnetic alloy sheet-band and soft magnetic ferrite.Into the seventies, with telecommunication, automatically control, computer
Etc. the development of industry, magnetic head magnetically soft alloy is have developed.
The Chinese patent application of Application No. CN201510566981.0 discloses a kind of magnetically soft alloy, the magnetically soft alloy
Material is FeCOMSiBTi base materials, and each composition composition is included by atomic percentage conc (at%)：The cobalt of 25-30, the M of 3-5,8-12
Silicon, the boron of 10-15, the titanium of 5-8, the scandium of 1-3%, remaining is iron and a small amount of inevitably impurity；The M copper and niobium, molybdenum,
One or more of combination in vanadium, zirconium.But the combination property of the soft magnetic materials of prior art is general.
The content of the invention
The present invention is not high in order to solve the problems, such as prior art soft magnetic materials combination property, there is provided a kind of composition metal oxygen
Compound soft magnetic materials and preparation method thereof, using glycerin monostearate, is improved the magnetic of soft magnetic materials, reduces coercive
Power.
In order to solve above-mentioned technical problem, the present invention is employed the following technical solutions：
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：40～80 parts of calcium oxide, boron oxide 40
～80 parts, 40～80 parts of magnesia, 40～80 parts of aluminum oxide, 30～50 parts of sodium metasilicate, 50～70 parts of niobium oxide, hydroxy silicon oil 10
～16 parts, 10～20 parts of sodium acid carbonate, 10～20 parts of alundum (Al2O3), 1～5 part of carbon black, 30～40 parts of glycerin monostearate,
50～80 parts of sodium carbonate, 70～80 parts of hydroxyethyl cellulose, 8～10 parts of hydroxypropyl cellulose, toluene di-isocyanate(TDI) 10～30
Part.
Preferably, metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：60 parts of calcium oxide, oxygen
Change 60 parts of boron, 60 parts of magnesia, 60 parts of aluminum oxide, 40 parts of sodium metasilicate, 60 parts of niobium oxide, 13 parts of hydroxy silicon oil, sodium acid carbonate 15
Part, 15 parts of alundum (Al2O3), 3 parts of carbon black, 35 parts of glycerin monostearate, 75 parts of sodium carbonate, 75 parts of hydroxyethyl cellulose, hydroxypropyl
9 parts of base cellulose, 20 parts of toluene di-isocyanate(TDI).
Preferably, metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：40 parts of calcium oxide, oxygen
Change 40 parts of boron, 40 parts of magnesia, 40 parts of aluminum oxide, 30 parts of sodium metasilicate, 50 parts of niobium oxide, 10 parts of hydroxy silicon oil, sodium acid carbonate 10
Part, 10 parts of alundum (Al2O3), 1 part of carbon black, 30 parts of glycerin monostearate, 50 parts of sodium carbonate, 70 parts of hydroxyethyl cellulose, hydroxypropyl
8 parts of base cellulose, 10 parts of toluene di-isocyanate(TDI).
Preferably, metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：80 parts of calcium oxide, oxygen
Change 80 parts of boron, 80 parts of magnesia, 80 parts of aluminum oxide, 50 parts of sodium metasilicate, 70 parts of niobium oxide, 16 parts of hydroxy silicon oil, sodium acid carbonate 20
Part, 20 parts of alundum (Al2O3), 5 parts of carbon black, 40 parts of glycerin monostearate, 80 parts of sodium carbonate, 80 parts of hydroxyethyl cellulose, hydroxypropyl
10 parts of base cellulose, 30 parts of toluene di-isocyanate(TDI).
Preferably, the surface area of carbon black is 10～3000m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) are at a high speed
Mixing, incorporation time are 60～90min；
It is sintered under nitrogen protection, at 100～120 DEG C, the time is 200～300 minutes for sintering temperature control；
Crushed under the conditions of 100～120MPa；Hot pressing；
It is sintered under nitrogen protection, sintering temperature is controlled at 750 DEG C～800 DEG C, is incubated 80～100 minutes, with stove
It is cooled to room temperature, you can.
Preferably, rotating speed during mixed at high speed is 1000～1200r/min.
Preferably, Control for Oxygen Content is below 1% during sintering.
Preferably, hot pressing temperature is 100～120 DEG C, hot pressing time is 40～80min.
Preferably, first sintering temperature control is at 110 DEG C, the time is 250 minutes, and second sintering temperature control exists
780 DEG C, it is incubated 90 minutes.
The invention has the advantages that：Metal composite oxide soft magnetic materials of the present invention in 300 DEG C of magnetic is
1.200～1.213T, 827～831kA/m of coercivity, 162～164kJ/m of maximum magnetic energy product3, addition glycerin monostearate can
To improve the combination property of soft magnetic materials.Hydroxypropyl cellulose can also improve the magnetic and maximum magnetic flux of soft magnetism to a certain extent
Energy product.
Specific embodiment
The present invention is further described in detail with reference to specific embodiment.
Embodiment 1
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：60 parts of calcium oxide, 60 parts of boron oxide,
60 parts of magnesia, 60 parts of aluminum oxide, 40 parts of sodium metasilicate, 60 parts of niobium oxide, 13 parts of hydroxy silicon oil, 15 parts of sodium acid carbonate, three oxidations
Two 15 parts of aluminium, 3 parts of carbon black, 35 parts of glycerin monostearate, 75 parts of sodium carbonate, 75 parts of hydroxyethyl cellulose, hydroxypropyl cellulose 9
Part, 20 parts of toluene di-isocyanate(TDI).
The surface area of carbon black is 3005m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) are at a high speed
Mixing, incorporation time is 75min, and rotating speed is 1100r/min.
It is sintered under nitrogen protection, at 110 DEG C, the time is 250 minutes for sintering temperature control；
Crushed under the conditions of 110MPa；Hot pressing；Hot pressing temperature is 110 DEG C, and hot pressing time is 60min.
It is sintered under nitrogen protection, sintering temperature is controlled at 780 DEG C, and Control for Oxygen Content is below 1%.90 points of insulation
Clock, cools to room temperature with the furnace, you can.
Embodiment 2
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：40 parts of calcium oxide, 40 parts of boron oxide,
40 parts of magnesia, 40 parts of aluminum oxide, 30 parts of sodium metasilicate, 50 parts of niobium oxide, 10 parts of hydroxy silicon oil, 10 parts of sodium acid carbonate, three oxidations
Two 10 parts of aluminium, 1 part of carbon black, 30 parts of glycerin monostearate, 50 parts of sodium carbonate, 70 parts of hydroxyethyl cellulose, hydroxypropyl cellulose 8
Part, 10 parts of toluene di-isocyanate(TDI).
The surface area of carbon black is 10m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) are at a high speed
Mixing, incorporation time is 60min, and rotating speed is 1000r/min；
It is sintered under nitrogen protection, at 100 DEG C, the time is 200 minutes for sintering temperature control；
Crushed under the conditions of 100MPa；Hot pressing；Hot pressing temperature is 100 DEG C, and hot pressing time is 40min.
It is sintered under nitrogen protection, sintering temperature is controlled at 750 DEG C, and Control for Oxygen Content is below 1%.80 points of insulation
Clock, cools to room temperature with the furnace, you can.
Embodiment 3
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：80 parts of calcium oxide, 80 parts of boron oxide,
80 parts of magnesia, 80 parts of aluminum oxide, 50 parts of sodium metasilicate, 70 parts of niobium oxide, 16 parts of hydroxy silicon oil, 20 parts of sodium acid carbonate, three oxidations
Two 20 parts of aluminium, 5 parts of carbon black, 40 parts of glycerin monostearate, 80 parts of sodium carbonate, 80 parts of hydroxyethyl cellulose, hydroxypropyl cellulose
10 parts, 30 parts of toluene di-isocyanate(TDI).
The surface area of carbon black is 3000m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) are at a high speed
Mixing, incorporation time is 90min, and rotating speed is 1200r/min；
It is sintered under nitrogen protection, at 120 DEG C, the time is 300 minutes for sintering temperature control；
Crushed under the conditions of 120MPa；Hot pressing；Hot pressing temperature is 120 DEG C, and hot pressing time is 80min.
It is sintered under nitrogen protection, sintering temperature is controlled at 800 DEG C, and Control for Oxygen Content is below 1%.Insulation 100
Minute, cool to room temperature with the furnace, you can.
Embodiment 4
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：55 parts of calcium oxide, 55 parts of boron oxide,
55 parts of magnesia, 55 parts of aluminum oxide, 45 parts of sodium metasilicate, 60 parts of niobium oxide, 14 parts of hydroxy silicon oil, 15 parts of sodium acid carbonate, three oxidations
Two 15 parts of aluminium, 4 parts of carbon black, 35 parts of glycerin monostearate, 75 parts of sodium carbonate, 78 parts of hydroxyethyl cellulose, hydroxypropyl cellulose 9
Part, 25 parts of toluene di-isocyanate(TDI).
The surface area of carbon black is 2000m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) are at a high speed
Mixing, incorporation time is 65min, and rotating speed is 1100r/min；
It is sintered under nitrogen protection, at 105 DEG C, the time is 260 minutes for sintering temperature control；
Crushed under the conditions of 105MPa；Hot pressing；Hot pressing temperature is 105 DEG C, and hot pressing time is 70min.
It is sintered under nitrogen protection, sintering temperature is controlled at 770 DEG C, and Control for Oxygen Content is below 1%.85 points of insulation
Clock, cools to room temperature with the furnace, you can.
Reference examples 1
Difference with embodiment 1 is：It is not added with glycerin monostearate.
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：60 parts of calcium oxide, 60 parts of boron oxide,
60 parts of magnesia, 60 parts of aluminum oxide, 40 parts of sodium metasilicate, 60 parts of niobium oxide, 13 parts of hydroxy silicon oil, 15 parts of sodium acid carbonate, three oxidations
Two 15 parts of aluminium, 3 parts of carbon black, 75 parts of sodium carbonate, 75 parts of hydroxyethyl cellulose, 9 parts of hydroxypropyl cellulose, toluene di-isocyanate(TDI) 20
Part.
The surface area of carbon black is 3005m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) mixed at high speed, rotating speed is
1100r/min, incorporation time are 75min；
It is sintered under nitrogen protection, at 110 DEG C, the time is 250 minutes for sintering temperature control；
Crushed under the conditions of 110MPa；Hot pressing；Hot pressing temperature is 110 DEG C, and hot pressing time is 60min.
It is sintered under nitrogen protection, sintering temperature is controlled at 780 DEG C, and Control for Oxygen Content is below 1%.90 points of insulation
Clock, cools to room temperature with the furnace, you can.
Reference examples 2
Difference with embodiment 2 is：It is not added with hydroxypropyl cellulose.
Metal composite oxide soft magnetic materials, including the raw material of following weight portion meter：40 parts of calcium oxide, 40 parts of boron oxide,
40 parts of magnesia, 40 parts of aluminum oxide, 30 parts of sodium metasilicate, 50 parts of niobium oxide, 10 parts of hydroxy silicon oil, 10 parts of sodium acid carbonate, three oxidations
Two 10 parts of aluminium, 1 part of carbon black, 30 parts of glycerin monostearate, 50 parts of sodium carbonate, 70 parts of hydroxyethyl cellulose, toluene diisocynate
10 parts of ester.
The surface area of carbon black is 10m2/g。
The preparation method of metal composite oxide soft magnetic materials, comprises the following steps：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, three oxidations
Two aluminium, carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, toluene di-isocyanate(TDI) mixed at high speed, incorporation time
For 60min, rotating speed is 1000r/min；
It is sintered under nitrogen protection, at 100 DEG C, the time is 200 minutes for sintering temperature control；
Crushed under the conditions of 100MPa；Hot pressing；Hot pressing temperature is 100 DEG C, and hot pressing time is 40min.
It is sintered under nitrogen protection, sintering temperature is controlled at 750 DEG C, and Control for Oxygen Content is below 1%.80 points of insulation
Clock, cools to room temperature with the furnace, you can.
Performance is determined when 300 DEG C：
As can be seen from the table, metal composite oxide soft magnetic materials of the present invention 300 DEG C magnetic be 1.200～
1.213T, 827～831kA/m of coercivity, 162～164kJ/m of maximum magnetic energy product3, and do not add the soft magnetism of glycerin monostearate
The magnetic of material will reduce coercivity far below the present invention.Illustrate to add glycerin monostearate improve soft magnetic materials
Combination property.Hydroxypropyl cellulose can also improve the magnetic and maximum magnetic energy product of soft magnetism to a certain extent.
The above, preferably specific embodiment only of the invention, protection scope of the present invention not limited to this are any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter of the technical scheme that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (10)
1. metal composite oxide soft magnetic materials, it is characterised in that including the raw material of following weight portion meter：Calcium oxide 40～80
Part, 40～80 parts of boron oxide, 40～80 parts of magnesia, 40～80 parts of aluminum oxide, 30～50 parts of sodium metasilicate, niobium oxide 50～70
Part, 10～16 parts of hydroxy silicon oil, 10～20 parts of sodium acid carbonate, 10～20 parts of alundum (Al2O3), 1～5 part of carbon black, monostearate are sweet
30～40 parts of grease, 50～80 parts of sodium carbonate, 70～80 parts of hydroxyethyl cellulose, 8～10 parts of hydroxypropyl cellulose, toluene two are different
10～30 parts of cyanate.
2. metal composite oxide soft magnetic materials according to claim 1, it is characterised in that including following weight portion meter
Raw material：60 parts of calcium oxide, 60 parts of boron oxide, 60 parts of magnesia, 60 parts of aluminum oxide, 40 parts of sodium metasilicate, 60 parts of niobium oxide, hydroxyl silicon
13 parts of oil, 15 parts of sodium acid carbonate, 15 parts of alundum (Al2O3), 3 parts of carbon black, 35 parts of glycerin monostearate, 75 parts of sodium carbonate, hydroxyl second
75 parts of base cellulose, 9 parts of hydroxypropyl cellulose, 20 parts of toluene di-isocyanate(TDI).
3. metal composite oxide soft magnetic materials according to claim 1, it is characterised in that including following weight portion meter
Raw material：40 parts of calcium oxide, 40 parts of boron oxide, 40 parts of magnesia, 40 parts of aluminum oxide, 30 parts of sodium metasilicate, 50 parts of niobium oxide, hydroxyl silicon
10 parts of oil, 10 parts of sodium acid carbonate, 10 parts of alundum (Al2O3), 1 part of carbon black, 30 parts of glycerin monostearate, 50 parts of sodium carbonate, hydroxyl second
70 parts of base cellulose, 8 parts of hydroxypropyl cellulose, 10 parts of toluene di-isocyanate(TDI).
4. metal composite oxide soft magnetic materials according to claim 1, it is characterised in that including following weight portion meter
Raw material：80 parts of calcium oxide, 80 parts of boron oxide, 80 parts of magnesia, 80 parts of aluminum oxide, 50 parts of sodium metasilicate, 70 parts of niobium oxide, hydroxyl silicon
16 parts of oil, 20 parts of sodium acid carbonate, 20 parts of alundum (Al2O3), 5 parts of carbon black, 40 parts of glycerin monostearate, 80 parts of sodium carbonate, hydroxyl second
80 parts of base cellulose, 10 parts of hydroxypropyl cellulose, 30 parts of toluene di-isocyanate(TDI).
5. the preparation method based on the metal composite oxide soft magnetic materials described in claim 1, it is characterised in that including following
Step：
By calcium oxide, boron oxide, magnesia, aluminum oxide, sodium metasilicate, niobium oxide, hydroxy silicon oil, sodium acid carbonate, alundum (Al2O3),
Carbon black, glycerin monostearate, sodium carbonate, hydroxyethyl cellulose, hydroxypropyl cellulose, toluene di-isocyanate(TDI) mixed at high speed,
Incorporation time is 60～90min；
It is sintered under nitrogen protection, at 100～120 DEG C, the time is 200～300 minutes for sintering temperature control；
Crushed under the conditions of 100～120MPa；Hot pressing；
It is sintered under nitrogen protection, sintering temperature is controlled at 750 DEG C～800 DEG C, is incubated 80～100 minutes, along with the furnace cooling
To room temperature, you can.
6. the preparation method of metal composite oxide soft magnetic materials according to claim 5, it is characterised in that mixed at high speed
When rotating speed be 1000～1200r/min.
7. the preparation method of metal composite oxide soft magnetic materials according to claim 5, it is characterised in that oxygen during sintering
Content is controlled below 1%.
8. the preparation method of metal composite oxide soft magnetic materials according to claim 5, it is characterised in that the table of carbon black
Area is 10～3000m2/g。
9. the preparation method of metal composite oxide soft magnetic materials according to claim 5, it is characterised in that hot pressing temperature
For 100～120 DEG C, hot pressing time is 40～80min.
10. the preparation method of metal composite oxide soft magnetic materials according to claim 5, it is characterised in that for the first time
At 110 DEG C, the time is 250 minutes, and second sintering temperature is controlled at 780 DEG C, is incubated 90 minutes for sintering temperature control.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003100508A (en) * | 2001-09-25 | 2003-04-04 | Nec Tokin Corp | Low-loss oxide magnetic material |
| CN1587192A (en) * | 2004-08-05 | 2005-03-02 | 秦会斌 | Anti-interference magnesium-zinc ferrite and producing method |
| CN105761864A (en) * | 2016-04-13 | 2016-07-13 | 天长市天豪制冷设备厂 | High-magnetic-energy-product ferrite core material |
| CN105788798A (en) * | 2016-03-29 | 2016-07-20 | 中山市玛而特电子科技有限公司 | Injection-molded ferrite soft magnetic material and preparation method thereof |
-
2016
- 2016-12-20 CN CN201611181131.XA patent/CN106531390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003100508A (en) * | 2001-09-25 | 2003-04-04 | Nec Tokin Corp | Low-loss oxide magnetic material |
| CN1587192A (en) * | 2004-08-05 | 2005-03-02 | 秦会斌 | Anti-interference magnesium-zinc ferrite and producing method |
| CN105788798A (en) * | 2016-03-29 | 2016-07-20 | 中山市玛而特电子科技有限公司 | Injection-molded ferrite soft magnetic material and preparation method thereof |
| CN105761864A (en) * | 2016-04-13 | 2016-07-13 | 天长市天豪制冷设备厂 | High-magnetic-energy-product ferrite core material |
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